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diversity

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  1. T

    another old fuse box

    hi all, here's another one i saw today which i wondered about. my mate was proudly showing me his new bathroom and i thought i'd have a nose at the electrical arrangements. he too has another old 1361 fuse box, with a new 13A 30mA RCD FCU installed on the wall above said fuse box providing the...
  2. S

    calculating diversity for lighting circuit

    Hi I'm sitting my unit 4 exam for C &G 2330 electrotechnical course. I'm a little confused to calculate the answer to this question I can't get the same answer 10 x 60w fluorescent lamps will have an assumed current demand at 230v of a. 2.6A b. 4.35 A c. 4.7 A d. 7.83...
  3. 1capybara

    Diversity factor for calculating loads ???

    I am a Yank electrician, I cant find where in 16th or 17th edition you have the diversity factor for calculating loads. Example: 1. In one office or sleeping room I put 4 power sockets on a 32 amp ring circuit. We have 100 identical sleeping rooms or offices. What is the total load that we...
  4. M

    demand and diversity

    Hi everyone, Can anyone help just trying to calculate the electrical demand and not sure about it. The circuits are as follow: 4 x lighting circuits (2 that are smoke circuits) 4 x ring mains 1 x radial for boiler 1 x cooker (32 amp supply needed, 28.6 amps without socket point on isolator?)...
  5. D

    diversity

    i'm trying to work out total load of a consumer unit on a job, lighting and other bits are quite straight forward but when it comes to socket circuits i'm not too sure if i reading the diversity table right it says " 100% of current demand of largest point of utilisation + 40% of current demand...
  6. I

    applying diversity

    hi guys ive got myself a little confused here when trying to calculate a max demand figure for the installation below. 60amp TNCS supply to a bungalow. 1x 30A Ring Main 1x 30A cooker unit(with socket) 1x 40A Shower (8.5kw) 2x 20A Radials 1x 5A Lights (7x100w) using table 1B app 1...
  7. I

    maximum Demand/ Diversity

    hi guys ive got myself a little confused here when trying to calculate a max demand figure for the installation below. 60amp TNCS supply to a bungalow. 1x 30A Ring Main 1x 30A cooker unit(with socket) 1x 40A Shower (8.5kw) 2x 20A Radials 1x 5A Lights (7x100w) using table 1B app 1...
  8. I

    Maximum Demand/ Diversity

    hi guys ive got myself a little confused here when trying to calculate a max demand figure for the installation below. 60amp TNCS supply to a bungalow. 1x 30A Ring Main 1x 30A cooker unit(with socket) 1x 40A Shower (8.5kw) 2x 20A Radials 1x 5A Lights (7x100w) using table 1B app...
  9. V

    Maximum demand and diversity

    Hello all I've got my NICEIC inspection in about 8 weeks time so i can hopefully join up with the NICEIC if all goes to plan. For the major im doing a consumer unit change at my mum and dads house ive spoke to western power they are coming out soon to fit an isolator in the line so i can...
  10. L

    NICEIC Certification Scheme Tony Cable & Maximum Demand on niceic video

    Watched the NICEIC's periodic inspection reporting dvd the other night, good overall and helpful but one thing I just cant agree with. I'm sure Tony Cable is a good electrician but when it came to the section on Maximum Demand he measured it with a clampmeter around the Line Tail and shouted "...
  11. D

    diversity

    hi i have done a board change on a property for my assesment working out max demand with diversity is giving me a result of 152 amps due to there being 3 rings and 2 single sockets on seperate circuits really boosting the demand i know it will never pull this can someone suggest what to put in...
  12. P

    Calculating lb and voltage drop

    Pre empting my 2382 and trying to calculate lb so as I can calculate voltage drop. Circuit I have used for this is an upstairs lighting circuit, 1mm2 t&e 4 light points and length of approx 19m. Cable installed to ref method C. Getting myself a bit confused but this is what I think I...
  13. i=p/u

    diversity in general

    havent got my books no more as lost on train last week or id have look,,,, ive seen loads of people talking about diversty on cookers 10% then 30% of remainder, what does this all apply to, isit just cookers.....
  14. D

    Very LArge Cooker and Diversity

    Being looking at sizing Cable for a new Cooker . It is a Beast with a manufacturesrs spec of 17.4 KW. Was applying diversity to this ie 10amps plus 30% etc ( no 5 amp). Just got me thinking that after the diversity the answer is 29.7 Amps down from 75.6amps. Was diversity designed to allow...
  15. T

    diversity of main supply for distribution board

    i need to wire in a 200a distribution board from a 400a board in an ind factory. Do i take diversity into account. The on-site guide says no but the Bs 7671 says yes but doesnt state if its for distribution boards or single circuits
  16. R

    Diversity

    Hello all, Have a potential 2 flat in the near future which are both tiny 1 bed flat. It consists of: Cooker 3kw,hob 5kw,3 electric 1kw heaters,7kw shower,2kw under sink heater(not instantaneous) light and 2 rings. After diversity calcs i come to about 70 amps. I still think that this is a...
  17. B

    2 cookers 1 halogen hob

    Evening chaps, Been having a think about this: Doing an extension soon which has an existing 6mm to iso for cooker. The kitchen's being ripped out soon and a micro- combi 3.6kw and single oven 3.3kw are going in with a 10.5kw halogen hob. EDITED for clarity: It actually looks like...
  18. R

    diversity

    Iv herd the 80% rule of thumb method used for calculating diversity of a circuit. Is this correct?
  19. S

    Cooker Install Diversity

    Hi All I'm still training and wonder if someone could explain the diversity factor that can be applied when specing for a cooker install and knowing what cable and mcb to use? Many Thank in advance Sky
  20. G

    Induction Hob - diversity.

    Obviously it's new technology and not necessarily dealt with in existing regs. But anyone know if diversity is applied any differently when installing ? ie 10 Amps plus 30% of remaining load. ? cheers

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